TriStar Matrix Inertia 20 Gauge Semi-Auto, 3″ Chamber

Description

The TriStar Matrix Inertia 20 Gauge Semi-Auto, 3″ Chamber is a field-ready inertia-driven shotgun built for hunters who want reliable cycling without gas-system maintenance. Chambered for 3-inch shells and wrapped in Realtree Max-7 camouflage, this 20-gauge handles light target loads and heavy magnums alike. It ships with Beretta/Benelli Mobil-style chokes (Improved Cylinder, Modified, Full), a vent-rib barrel, and a fiber-optic front sight for fast acquisition in low light.

Manufacturer	TriStar
Model	Matrix Inertia 20 Gauge Semi-Auto
Material	Synthetic stock, aluminum receiver (per manufacturer specs)
Compatibility	Beretta/Benelli Mobil-style chokes
Finish	Realtree Max-7 camouflage
Weight	Approximately 6.5 lbs (per manufacturer specs)
Condition	New

Key Features

• Inertia-Driven Action — Why it matters: No gas ports to clean, no O-rings to replace; cycles reliably in dirty conditions and handles 2¾-inch target loads through 3-inch magnums without adjustment.
• Realtree Max-7 Camo Finish — Why it matters: Breaks up your silhouette across open fields, timber, and marsh edges, keeping you hidden from sharp-eyed turkeys and waterfowl.
• Beretta/Benelli Mobil-Style Choke System — Why it matters: Uses widely available chokes so you can swap patterns for steel shot, buckshot, or slugs without buying proprietary tubes.
• Fiber-Optic Front Sight — Why it matters: Glows in low-light dawn or dusk conditions, giving you a bright aiming point without batteries or tritium.
• 5+1 Capacity with 3″ Chamber — Why it matters: Holds enough shells for extended strings on doves or ducks, and the 3-inch chamber lets you run heavy steel or lead loads when you need extra reach.

Who It’s For

This shotgun is built for the hunter who spends more time in the field than at the cleaning bench. If you chase upland birds, waterfowl, or turkeys and want a lightweight 20-gauge that sheds mud and recoil without gas-system fuss, the Matrix fits. It also suits shooters transitioning from a pump to a semi-auto who want simplicity and reliability.

Pros & Cons

• Pro: Inertia action stays clean and cycles everything from 1-ounce target loads to 3-inch magnums.
• Pro: Realtree Max-7 camo blends into multiple environments.
• Con: Fixed synthetic stock means no length-of-pull adjustment — taller shooters may need an aftermarket recoil pad or spacer kit.

Comparison vs. Competitors

Feature	TriStar Matrix Inertia 20 Gauge	Benelli Montefeltro 20 Gauge	Remington 870 20 Gauge
Action	Inertia semi-auto	Inertia semi-auto	Pump
Weight	~6.5 lbs	~6.8 lbs	~7.0 lbs
Chamber	3″	3″	3″
Finish	Realtree Max-7 camo	Matte black or camo	Matte black or camo
Price	$653.59	$1,200+	$450-$600
Choke System	Beretta/Benelli Mobil	Beretta/Benelli Mobil	Remington Pro Bore

FAQ

Does the TriStar Matrix 20 gauge cycle light target loads?

Yes. The inertia system handles 2¾-inch 1-ounce target loads reliably, though it may need a few shells to break in. Use 1⅛-ounce loads for the first 50 rounds to speed up break-in.

Can I use steel shot with the included chokes?

Yes. Improved Cylinder and Modified are steel-shot rated. The Full choke is not recommended for steel — use it only with lead or bismuth.

Is this shotgun left-hand friendly?

No. The Matrix is configured for right-handed shooters only, with a right-hand cast stock and ejection port on the right side.

What chokes does the TriStar Matrix use?

It uses Beretta/Benelli Mobil-style chokes. The shotgun ships with Improved Cylinder, Modified, and Full tubes.

How do I clean the inertia system?

Disassemble the bolt and wipe the inertia spring and piston clean. No lubrication is needed on the inertia system — oil can attract debris and cause malfunctions.

Ready to Order

✓ Nationwide delivery (all 50 states)
✓ Ships 1-2 business days
✓ 30-day returns
✓ Secure checkout

Browse more Semi Auto Shotguns or check our 20 Gauge Shotguns and Hunting Shotguns for additional options.

Last updated: April 2026